Question

Express (3/4) as a rational number with denominator:

(i) 20

(ii) 36

(iii) 44

(iv) -80

Answer 1

(i) Given (3/4)

To get denominator 20 we have to multiply both numerator and denominator by 5

Then we get, (3/4) × (5/5)

= (15/20)

Therefore (3/4) as a rational number with denominator 20 is (15/20)

(ii) Given (3/4)

To get denominator 36 we have to multiply both numerator and denominator by 9

Then we get, (3/4) × (9/9)

= (27/36)

Therefore (3/4) as a rational number with denominator 36 is (27/36)

(iii) Given (3/4)

To get denominator 44 we have to multiply both numerator and denominator by 11

Then we get, (3/4) × (11/11)

= (33/44)

Therefore (3/4) as a rational number with denominator 44 is (33/44)

(iv) Given (3/4)

To get denominator -80 we have to multiply both numerator and denominator by -20

Then we get, (3/4) × (-20/-20)

= (-60/-80)

Therefore (3/4) as a rational number with denominator -80 is (-60/-80)